Package gda.epics.connection

Class CTRLHandler

java.lang.Object

gda.epics.connection.CompoundDataTypeHandler

gda.epics.connection.STSHandler

gda.epics.connection.GRHandler

gda.epics.connection.CTRLHandler

public class CTRLHandler
extends GRHandler

CTRLHandler Class

Method Summary

Modifier and Type	Method	Description
protected gov.aps.jca.dbr.DBR	getCompoundData(gov.aps.jca.Channel ch)	returns a compound DBR value of the channel, including value, alarm status, alarm severity, units, display precision, graphic limits, and control limits implements the abstract base class method.
static gov.aps.jca.dbr.DBRType	getCTRLType(gov.aps.jca.Channel ch)	returns the CTRL DBRType of the channel that corresponds to its native primiary type.
Number	getLowerCrtlLimit(gov.aps.jca.Channel ch)	a generic method returning the lower control limit of the channel directly from EPICS server via compound DBR_CTRL type.
static Number	getLowerCrtlLimit(gov.aps.jca.dbr.DBR dbr)	a generic method returning the lower control limit of the DBR if the DBR request is of the CTRL type.
Number	getUpperCtrlLimit(gov.aps.jca.Channel ch)	a generic method returning the upper control limit of the channel directly from EPICS server via compound DBR_CTRL type.
static Number	getUpperCtrlLimit(gov.aps.jca.dbr.DBR dbr)	a generic method returning the upper control limit of the DBR if the DBR is of the type CTRL.

Methods inherited from class gda.epics.connection.GRHandler

getGRType, getLowerAlarmLimit, getLowerAlarmLimit, getLowerDispLimit, getLowerDispLimit, getLowerWarningLimit, getLowerWarningLimit, getUnits, getUnits, getUpperAlarmLimit, getUpperAlarmLimit, getUpperDispLimit, getUpperDispLimit, getUpperWarningLimit, getUpperWarningLimit

Methods inherited from class gda.epics.connection.STSHandler

getSeverity, getSeverity, getStatus, getStatus, getSTSType

Methods inherited from class gda.epics.connection.CompoundDataTypeHandler

getByte, getByte, getDouble, getDouble, getEnum, getEnum, getFloat, getFloat, getInt, getInt, getShort, getShort, getString, getString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

getLowerCrtlLimit

public Number getLowerCrtlLimit(gov.aps.jca.Channel ch)
                         throws gov.aps.jca.CAException,
gov.aps.jca.TimeoutException,
InterruptedException

a generic method returning the lower control limit of the channel directly from EPICS server via compound DBR_CTRL type.

Parameters:

ch - the CA channel

Returns:

the lower control limit in Number type.

Throws:

gov.aps.jca.CAException

gov.aps.jca.TimeoutException

InterruptedException

getUpperCtrlLimit

public Number getUpperCtrlLimit(gov.aps.jca.Channel ch)
                         throws gov.aps.jca.CAException,
gov.aps.jca.TimeoutException,
InterruptedException

a generic method returning the upper control limit of the channel directly from EPICS server via compound DBR_CTRL type.

Parameters:

ch - the CA channel

Returns:

the upper control limit in Number type.

Throws:

gov.aps.jca.CAException

gov.aps.jca.TimeoutException

InterruptedException

getLowerCrtlLimit

public static Number getLowerCrtlLimit(gov.aps.jca.dbr.DBR dbr)

a generic method returning the lower control limit of the DBR if the DBR request is of the CTRL type.

Parameters:

dbr -

Returns:

the lower control limit in Number type.

getUpperCtrlLimit

public static Number getUpperCtrlLimit(gov.aps.jca.dbr.DBR dbr)

a generic method returning the upper control limit of the DBR if the DBR is of the type CTRL.

Parameters:

dbr -

Returns:

the upper control limit in Number type.

getCompoundData

protected gov.aps.jca.dbr.DBR getCompoundData(gov.aps.jca.Channel ch)
                                       throws gov.aps.jca.CAException,
gov.aps.jca.TimeoutException,
InterruptedException

returns a compound DBR value of the channel, including value, alarm status, alarm severity, units, display precision, graphic limits, and control limits implements the abstract base class method.

Overrides:

getCompoundData in class GRHandler

Parameters:

ch - the CA channel

Returns:

DBR

Throws:

gov.aps.jca.CAException

gov.aps.jca.TimeoutException

InterruptedException

getCTRLType

public static gov.aps.jca.dbr.DBRType getCTRLType(gov.aps.jca.Channel ch)

returns the CTRL DBRType of the channel that corresponds to its native primiary type. This method ensures the automatic type conversion between primiary types is always avoided during the channel request.

Parameters:

ch - the CA channel

Returns:

The DBR type name for CTRL, i.e. DBR_CTRL_XXXX